ISMI Recoil Guide Rod Spring Standard Frame Glock Pistols

Premium grade ISMI factory weight recoil spring for the Standard Frame Glock 17, 20, 21, 24, 31, 34, 35

ISMI flat recoil springs are heated treated, shot peened and stress relieved after winding to enhance their performance and durability.

These springs are compatible our stainless steel captured Glock Gen 3 guide rods.